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Akrapovic Monkey Exhaust

This is a discussion on Akrapovic Monkey Exhaust within the Monkey Talk forums, part of the Honda Monkey 125 Forums category; Originally Posted by bluestreak614 Has anyone tried installing the Akrapovic Slip-On to the stock head pipe? I've found that mine simply does not clamp tight ...

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  1. #51
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    Quote Originally Posted by bluestreak614 View Post
    Has anyone tried installing the Akrapovic Slip-On to the stock head pipe?

    I've found that mine simply does not clamp tight enough no matter what I've tried. Even with the C-clamp screw fully screwed in, I can easily remove it with one hand with little effort. Obviously there's a ton of leak. I have a hard time believing Akrapovic would mess things up that bad. Am I missing something?
    Akrapovic doesn't include a new exhaust gasket, which they should, because gaskets are a consumable and the original can crack or crumble when removing the original silencer. It can also get stuck in the silencer, even though it is meant to stay with the header/cat. They don't mention anything about this in their instructions linked here, and they don't include any pictures that show the gasket in place.

    Fortunately, Honda has been using the same gasket (Honda part number 18391-HB7-000) on dozens of models dating back to the 60's or 70's, so finding one cheap and in stock if yours is damaged shouldn't be a problem.

    https://www.partzilla.com/product/ho...ac31ce28aa41af

    Interestingly, Yoshimura's instructions explicitly say to remove the muffler gasket, and that it will not be used with their slip-on.
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    I know because Akrapovic has been installing resonators on all their super cross bike headers for some time now. Check out the bent cylinder resonator on this KTM header.

    Akrapovic Monkey Exhaust-37999299-7e15-4028-b40e-67ec5bff6ea7.png

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    Here is a close up shot of the small connection between then header and resonator. Exhaust and sound goes in, bounces around and changes the characteristics of the exhaust tone.
    Akrapovic Monkey Exhaust-50b9fa5b-9b8f-48b1-9509-40053f51f99c.jpeg

    Have a a little over 100 miles on it now. Engine runs much better after I installed PCV and WB2. The raspy note noticeable mainly on deceleration is now gone. Some kind of fuel controller is necessary after letting the motor breath.
    Attached Thumbnails Attached Thumbnails Akrapovic Monkey Exhaust-1e185c56-895d-43a1-a6b6-9e15749e12b3.jpeg  
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  5. #54
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    Quote Originally Posted by GdubluG View Post
    Here is a close up shot of the small connection between then header and resonator. Exhaust and sound goes in, bounces around and changes the characteristics of the exhaust tone.
    Click image for larger version. 

Name:	50B9FA5B-9B8F-48B1-9509-40053F51F99C.jpeg 
Views:	18 
Size:	1.85 MB 
ID:	81344

    Have a a little over 100 miles on it now. Engine runs much better after I installed PCV and WB2. The raspy note noticeable mainly on deceleration is now gone. Some kind of fuel controller is necessary after letting the motor breath.
    Thanks for the informative pic. The connection was very cleverly hidden.
    There HAS to be a physical opening into an exhaust system to enable a Helmholz resonator to operate.
    Last edited by tooter; 07-05-2019 at 07:09 PM.
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    Wow really? For a resonator to work it has to be connected to the exhaust and not sitting on the shelf in your garage? What a revelation.

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    In Quibbly's eager rush to quibble...



    ...he neglected to read that the connection has to be into the exhaust, not just stuck onto the outside surface. That's the little tube hidden behind the mount connecting the two together.
    Last edited by tooter; 07-06-2019 at 12:40 AM.
    2018 GROM:
    TST Rear Fender Eliminator
    TST Taillight +Signal Lights
    TST Front Signal Lights
    Dinger Built Extra Long Intake
    IXIL Dual Exhaust
    Yuminashi ECU
    Kitaco Case Cover w/Oil Filter
    Takagawa High Volume Oil Pump
    Honda Monkey Rear Sets
    Honda Monkey Front Fender
    Honda Monkey Fork Guards
    Honda Black Plastics
    G Craft Rear Rack
    Cargo Crate

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    tooter you're so full of shit it makes my brain hurt.


    your first post here was that it MUST be a heat shield. then upon hearing it's a resonance chamber you try to play the smart card.


    go fuck yourself you stupid old bastard.


    of course it's connected to the piping. what good would welding a chamber on to the exhaust be without connecting it into the piping?!


    i'm done with you. i wish there was a go fuck yourself you stupid old cunt block function, but sadly there isn't so im stuck with seeing your old fuck ramblings about your shitty bike economy in every goddamn post. whether it has any relevance whatsoever or not. fucking hell.


    the worthlessness of your opinions knows no bounds.
    Last edited by Wibbly; 07-06-2019 at 01:06 AM.
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    Quote Originally Posted by tooter View Post
    In Quibbly's eager rush to quibble...

    ...he neglected to read that the connection has to be into the exhaust, not just stuck onto the outside surface. That's the little tube hidden behind the mount connecting the two together.
    Quote Originally Posted by Wibbly View Post
    tooter you're so full of shit it makes my brain hurt.

    your first post here was that it MUST be a heat shield. then upon hearing it's a resonance chamber you try to play the smart card.

    go fuck yourself you stupid old bastard.

    of course it's connected to the piping. what good would welding a chamber on to the exhaust be without connecting it into the piping?!

    i'm done with you. i wish there was a go fuck yourself you stupid old cunt block function, but sadly there isn't so im stuck with seeing your old fuck ramblings about your shitty bike economy in every goddamn post. whether it has any relevance whatsoever or not. fucking hell.

    the worthlessness of your opinions knows no bounds.
    You two need to get a room and stop cluttering up threads with the bullshit. I'm very new to this forum, but I've already seen this bickering a handful of times. It's getting old guys. You're both adults, right? So can't we just act like adults and ignore each other?

    I'm all for calling somebody out when they're wrong because spreading misinformation on a forum is so bad, but this isn't the way to do it.

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    He's a dumbass. He just wants to post pics of his shitty bikes, talk about his ecu on big bore threads, make self indulgent posts, and feed his confirmation bias. He's one of the lowest contributors I've ever come across.

    He's posted about his fuel economy in almost every thread on here. What an idiot.

    That's all...
    Last edited by Wibbly; 07-06-2019 at 08:40 AM.
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    Quote Originally Posted by 50-50 View Post
    You two need to get a room and stop cluttering up threads with the bullshit.
    Simply look at who always starts with nasty remarks... the Quibbler.
    2018 GROM:
    TST Rear Fender Eliminator
    TST Taillight +Signal Lights
    TST Front Signal Lights
    Dinger Built Extra Long Intake
    IXIL Dual Exhaust
    Yuminashi ECU
    Kitaco Case Cover w/Oil Filter
    Takagawa High Volume Oil Pump
    Honda Monkey Rear Sets
    Honda Monkey Front Fender
    Honda Monkey Fork Guards
    Honda Black Plastics
    G Craft Rear Rack
    Cargo Crate

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